It's worth spreading this astonishing film from the disturbances outside the Catalan parliament to remind ourselves of the lengths to which the authorities will go to undermine the emergence of a popular movement. The legitimacy of 15M depends on people identifying with it. At the moment it's a bit like Schrodinger's cat, in a state of unresolved possibilities. A massive turnout for the demonstration tomorrow could be a defining moment in the formation of a genuinely popular movement.